1970 challenger rt (what is this?) under driver seat. What does it hold , support?

[jimclo2002]

can someone help with this question Just about finished with the install of the floor. Please see photo... what is this for under driver seat? What does it hold?

 

[340challconvert]

Six way seat bracket

I think that is a bracket for the support brace that goes under the floor for the six way drivers seat tracks.

 

[340challconvert]

2nd pic

 

[challenger6pak]

These are the braces.